How to use bluetooth connection sensor?

Mobile Apps Home Assistant Companion for Android
3

I have this in a function node of Node red.

var wasConnected = msg.data.old_state.attributes.connected_paired_devices.includes("4E:C3:9E:5B:9C:86");

if(wasConnected){
    var isConnected = msg.data.new_state.attributes.connected_paired_devices.includes("4E:C3:9E:5B:9C:86");
    if(!isConnected){
        msg.BTtrigger = "true";
    }else{
        msg.BTtrigger = "false";
    }
}else{
    msg.BTtrigger = "false";
}
//4E:C3:9E:5B:9C:86
return msg;

This is to trigger on when you disconnect from a specific device.
In this case it’s a Bluetooth device in the car, and when this happens the msg.BTtrigger becomes “true”.

EDIT:
Now that I look at my code I see that this is a better approach…

var wasConnected = msg.data.old_state.attributes.connected_paired_devices.includes("4E:C3:9E:5B:9C:86");

msg.BTtrigger = "false";
if(wasConnected){
    var isConnected = msg.data.new_state.attributes.connected_paired_devices.includes("4E:C3:9E:5B:9C:86");
    if(!isConnected){
        msg.BTtrigger = "true";
    }
}
//4E:C3:9E:5B:9C:86
return msg;

It does the same thing in fewer lines…

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